I agree with you, but I also think the Dragon Breath should be on there too, I honestly would replace the exterminator with the dragon breath, but hey that's me, maby because I don't have the exterminator.
Everyone has a right to have a opinion though, so yea in general good top 10 list.
Yea I see your right 510 is fine and besides I don't want noobs to have the dragon breath.
How about an easyer way to earn gems. That would be good. I'm level 26 and I can't get gems anymore...
I got an awsome idear how about in the next update air strike were added! For example you could plan and coordinate your own air strike on an unlucky player.